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Erythrocyte Porphyrin (EP), Whole Blood
Test Code39777
CPT Codes
84202
Preferred Specimen
1 mL whole blood collected in an EDTA (royal-blue, lavender, pink, or tan-top) tube
Minimum Volume
0.5 mL
Instructions
Transfer 1 mL whole blood to an Amber Transport Tube. Protect from light during collection, storage, and shipment.
Specimen should be tested for lead FIRST to avoid potential contamination problems. Use royal blue tube when also testing for lead.
Specimen should be tested for lead FIRST to avoid potential contamination problems. Use royal blue tube when also testing for lead.
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: Unacceptable
Refrigerated: 14 days
Frozen: 30 days
Refrigerated: 14 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Specimens not collected in EDTA • Clotted specimens
Methodology
Fluorometry
FDA Status
This test was developed and its performance characteristics determined by ARUP Laboratories. The U.S. Food and Drug Administration has not approved or cleared this test; however, FDA clearance or approval is not currently required for clinical use. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions.
Setup Schedule
Sets up 3 days a week.
Report Available
Reports in 3 to 5 days.
Clinical Significance
Screen for erythropoietic protoporphyria (EPP) in patients with cutaneous photosensitivity.
